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Issues

IN THIS ISSUE

MEETING REVIEW

Summary: This Meeting Review summarises the key advances presented at The Notch IX meeting, which was held in Athens, Greece, in October 2015.

REVIEW

Summary: This Review highlights the molecular mechanisms of stomach development and discusses recent findings regarding stomach stem cells and organoid cultures, and their roles in investigating stomach diseases.

STEM CELLS AND REGENERATION

Summary: The entire spermatogenesis process is successfully recapitulated in culture using zebrafish testicular hyperplasias that accumulate early stage spermatogonia.

RESEARCH REPORTS

Highlighted article: LGN inactivation in mice disrupts spindle orientation in both the retina and neocortex but leads to very different outcomes with regards to cell fate in each context.

Summary: SDF1/CXCR4 signaling lies downstream of Tbx1 during pharyngeal neural crest development, and inactivating CXCR4 causes defects that phenocopy the human DiGeorge syndrome.

Summary: Endothelial cells produce Sema3A, a known axon repellent, that exerts repelling functions on VEGF-A-induced tip cell filopodia during angiogenesis in mice.

RESEARCH ARTICLES

Highlighted article: A comparison of Six2/SIX2 regulatory targets in mouse and human nephron progenitors reveals that Six1/SIX1 is differentially regulated and expressed between the two species.

Highlighted article: The cannabinoid receptors Cnr1 and Cnr2 are required for normal hepatocyte proliferation and differentiation during zebrafish development, and for normal liver metabolism in adult zebrafish.

Highlighted article: Time-lapse imaging studies to follow cell behavior and dynamics in Drosophila epithelia reveal mechanical roles for tumor suppressors and proto-oncogenes.

Summary: The developmental potential of embryos fertilized with sperm from germline-specific Dicer or Drosha conditional knockout mice is impaired, highlighting key roles for paternal miRNAs/endo-siRNAs.

Summary: During bone formation in neonatal mice, chondrocytic expression of the receptor tyrosine kinase Ephrin B2 regulates cartilage degradation and subsequent osteoclastic destruction of the cartilage matrix.

Summary: The absence of dystrophin in human fetal muscle alters IP3 signaling pathways and consequently causes a delay in myogenesis and myofiber commitment.

Summary: During tooth development in mice, FGF-dependent vertical cell divisions thicken the tooth placode while Shh drives cell rearrangements that cause invagination.

Summary: The transcription factor NFL acts via the GA pathway and is necessary for promoting flowering in Arabidopsis under non-inductive short-day conditions.

Summary: Analyses of the mDA neuron marker genes Pitx3 and Aldh1a1 in chick and mouse suggest important differences in how mDA neurons are generated in these species.

Summary: A screen identifies skeletal patterning factors, including a sulfate transporter, and suggests that ventral proteoglycan sulfation acts as a positional cue during sea urchin skeletal patterning.

Summary: The analysis of actomyosin and C-cadherin dynamics in Xenopus embryos suggests a multistep model to explain how cell intercalation can occur against a force gradient to drive axial extension.

ARTICLES OF INTEREST IN OTHER COB JOURNALS

From Journal of Cell Science
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